Beta Cleanup

## Description
In anticipation of the forthcoming beta release, we will need to make sure that we have done a number of things:

### Meta
- [ ] Add and use CODEOWNERS file

### Cargo.toml
- [ ] Allocate authorship of crate to IOTA Foundation
- [ ] Cleanup and group dependency ordering
- [ ] Verify that all dependencies are up to date
- [ ] Supply a proper software BOM

### Documentation
- [ ] Add crate level introduction to `lib.rs`
- [ ] Catch missing docs `#![warn(missing_docs)]`

### Readme
- [x] Readme that defines the library
- [ ] Must reference license
- [x] Should be ref'd in the Cargo.toml
- [ ] When published, should have a crates.io badge
- [ ] Should provide a link to the CHANGELOG (top level should link to ALL changelogs)

### CI
- [ ] Should also run examples (if feasible)
- [ ] Audit all external workflows
- [ ] Do more careful checks for running tests (e.g. don't need to run tests if we only change the README)

### ARCHITECTURE.md
- [ ] We need a very verbose explanation of the architecture from a general perspective as well as go into detail about each feature and what it does.